US2931684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool ways
Assignee: Rockford Machine Tool Co
•
Filing: 1954-06-02
•
Granted: 1960-04-05
•
Expires: 1974-06-02
Abstract
No abstract record available.
Inventors
- 👤 Earle W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:36
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49641; Y10T29/49718; Y10T29/49732
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2167609A
Cited
US2423869A
Cited
US2407145A
Cited
US2679468A
Cited
US2675276A
Cited
US2755147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |